Protective railing

ABSTRACT

A protective railing includes a frame, a railing body, a lockset, two fix unit and plural position members. The position members secure the frame to a doorframe or in a passageway. If the railing body is to be opened, a push button on a grip is shifted to move a deadbolt inward to separate from an insert hole of the railing body, and then the grip is pressed down to move up a rack together with a connect tube, with a stop block of the rack and the connect tube separate from between two stoppers of the fix unit, unlocking the lock set to let the railing body opened. To lock the lockset, after the railing body is closed, the push button is shifted outward to move the deadbolt to insert in the insert hole of the raining body, finishing locking process.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a protective railing, particularly to one consisting of a frame, a railing body, a lockset, a fix unit and plural position members. The position members secure the frame with a doorframe or in a passageway. If the railing body is wanted to be opened, a push button on a grip is shifted inward to force a deadbolt retreat inward and separate from an insert hole of the railing body. Then the grip is swung downward, moving up a rack and a connect tube to separate stop blocks of the rack and the connect tube from between two stop blocks of the fix unit so that the railing body may be opened. If the railing body is to be locked after closed, the push button of the grip is moved outward, shifting outward one end of the deadbolt to insert in the insert hole of the railing body, finishing locking the railing body.

2. Description of the Prior Art

In order to prevent a baby or a pet from crawling or walking out of a room or the like for avoiding potential dangers caused by fidgeting something or crawling near to a stairways, a railing of a proper height is installed with a doorframe or in a passageway, confining a baby or a pet in a limited safe space. Conventional railings are generally pivotally connected to a doorframe at one side, and the other side is provided with a latch possible to extend in a latch hole on the doorframe at the corresponding spot. Then the railing can be temporarily locked by the latch inserted in the latch hole. If the railing closed is to be opened, the latch is shifted out of the latch hole of the doorframe. Anyway, this kind of locking the railing is not so sure to be locked by the latch, often not correctly inserted in the latch hole, letting the railing liable to be opened, not obtaining true protection for a baby or a pet.

SUMMARY OF THE INVENTION

The purpose of the invention is to offer a protective railing possible to be locked without fail to truly obtain protection for a baby or a pet (or pets).

The feature of the invention is a frame provided with a pivotal base with a pivot, two pivots also on a lower portion of the frame, a railing body fixed inside the frame and having one side rod provided with a shaft hole respectively in an upper end and a lower end for the shafts of the frame to fit in. The railing body further has an opening in a right side and a guide rod with an insert hole provided in the opening. The side rod of the railing body is hollow, having a slot in one side of a lower end section. A lockset is positioned in the opening of the railing body, and a fix unit is fixed on a vertical rod of the inner side of the frame. Plural position members are provided respectively at four corners of the frame.

BRIEF DESCRIPTION OF DRAWINGS

This invention will be better understood by referring to the accompanying drawings, wherein:

FIG. 1 is a perspective view of a protective railing in the present invention;

FIG. 2 is an exploded perspective view of a lockset in the present invention;

FIG. 3 is an exploded perspective view of a fix unit in the present invention;

FIG. 4 is a perspective view of the lockset combined with the fix unit in the present invention;

FIG. 5 is a perspective view of the protective railing secured to a doorframe in the present invention;

FIG. 6 is a side view of the lockset under the locked condition in the present invention;

FIG. 7 is a side view of the lockset under the unlocked condition in the present invention; and,

FIG. 8 is an upper view of the lockset under locked condition with the railing body closed in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

A preferred embodiment of a protective railing in the present invention, as shown in FIGS. 1, 2, 3 and 4, includes a frame 1, a railing body 2, a lockset 3, a fix unit 4 and plural position members 5 as main components combined together.

The frame 1 is U-shaped, having a pivotal base 10 on an upper side, a pivot 11 fixed on the pivotal base 10, a pivot 12 also fixed on a lower side to corresponding to the pivot 11.

The railing body 2 is fixed inside the frame 1, having a shaft hole 20 respectively in an upper side and a lower side for the pivots 11, 12 to extend in so as to combine one side of the railing body 2 pivotally with the frame 1, The railing body 2 further has an opening 21 in an upper section of one side, and a curved guide rod 22 fixed in the opening 21. The guide rod 22 has an insert hole 23, as shown in FIG. 6. The railing body 2 has a vertical side hollow rod 24 closing the opening 21, and the side rod 24 has a slot 25 formed in a lower end, and plural holes 26 near the upper end.

The lockset 3 is fixed on the opening 21 of the railing body 2, consisting of a left housing 30, a right housing 31, a rack 32, a grip 33, a push button 34, a deadbolt 35, a cover 36, a connect tube 37, a spring 38, and a stop block 39, as shown in FIG. 2.

The left housing 30 has plural sidewise posts 300 on an inner surface, a sidewise shaft 301 also on the inner surface, an elongate aperture 302 in a vertical side. The right housing has plural holes 310 and 311 to corresponding to the sidewise posts 300 and the sidewise shaft 301, and screws 303 and 312 screw in the sidewise shaft 301 and the holes 311. The right housing 31 further has an elongate aperture 313 in a vertical side, and the right housing 31 and the left housing 30 are combined tightly together by a screw 314.

The rack 32 has plural teeth 320 on one side surface, and a stop block 321 on the other side surface and fitting in the aperture 302 of the left housing 30 and the aperture 313 of the right housing 31. The rack 32 further has a sidewise hole 322.

The grip 33 has the left end extending in the left and the right housing 30 and 31, having a shaft hole 330 in one end for the sidewise shaft 301 of the left housing 30 to fit therein, and plural projecting teeth 331 formed on an curved outer surface of the end with the shaft hole 330 for engaging with teeth 320 of the rack 32. The grip 33 further has a slide slot 332 in the center portion, a groove 333 in the right end to fit with the guide rod 22 of the railing body 2, and a hole 334 in the wall of the groove 333.

The push button 34 is fitted in the slide slot 332 of the grip 33, having an insert hole 340 in the lower portion.

The deadbolt 35 is movably positioned in the grip 33, having the right end fitting in the insert hole 334 of the grip 33 and a projection 350 to fit in the insert hole 340 of the push button 34.

The cover 36 has two upright position plates 361 in parallel for a portion of the deadbolt 35 to movably located in the gap between the two plates 361 to move straight back and forth, a groove 362 in the right end to align to the groove 333 of the grip 33 for fitting with the guide rod 22 of the railing body 2. The groove 362 has an insert hole 363 in its wall for the right end of the deadbolt 35 to extend in or out.

The connect tube 37 is positioned in the interior of the side rod 24 of the railing body 2, having its upper end connected to the lower end of the rack 32, a transverse hole 370 for a pin 371 to extend therein and also through the holes 370 and 322 to combine the connect tube 37 with the rack 32.

The spring 38 is positioned in a inner lower portion of the connect tube 37, having its one end fixed in the connect tube 37 and the other end hooking the lower edge of he side rod 24 of the railing body 2, keeping the connect tube 37 elastically biased downward.

The stop block 39 is fixed at the lower end of the connect tube 37 and partly located in the slot 25 of the side rod 24.

The two fix units 4 are fixed respectively on an upper end and a lower end of a right vertical side rod 13 of the frame 1, consisting of a base 40, two stoppers 41, two springs 42 and a fix base 43, as shown in FIG. 3. The base 40 has two lengthwise holes 400 in parallel, an opening 401 in the rear side for the side rod 13 to fit in, and a lateral hole 402 through the rear side for a long bolt 403 to insert therein, and a vertical hole 404 between the two holes 400 for a screw to screw with. The two stoppers 41 are positioned in the two holes 400, having the front end formed with a slanting surface 410, projecting posts 411, and two springs 42 positioned at the rear end and having the front end fitting around the projecting posts 411. The fix base 43 is positioned behind the base 40, having an opening 430 to correspond to the opening 401 of the base 40, two sidewise posts 431 for the rear ends of the two springs 42 to fit around, two lateral holes 432 in two side walls for the elongate bolt 403 to pass through and engage with a nut 403′.

The four support members 5 are combined with the four corners of the frame 1, respectively consisting of a threaded rod 50, a nut 51 and a position head 52.

In using, referring to FIGS. 5, 6, 7 and 8, first, the protective railing is secured to a doorframe 6 or in a passageway, adjusted by rotating the threaded rods 50 of the support members 5 to move outward or inward to let the position heads 52 tightly push against the wall surface of the doorframe 6 or the passageway, then the nuts 51 rotated to push tightly against the position heads 52. Thus, the protective railing is fixed tightly with the doorframe 6 or the passageway, as shown in FIG. 5.

Next, if the railing body 2 is wanted to be opened, the push button 34 of the grip 33 is shifted to retreat the deadbolt 35 in the grip 33 and disengaging from the insert hole 23 of the guide rod 22. Then the grip 33 is pressed down, with the projecting teeth 331 contained in the left housing 30 and the right housing 31 rotated to move up and also move the rack 32 meshing with the teeth 31. Then the rack 32 pulls up the connect tube 37 at the same time, with the spring 38 pulled to a lengthened condition. Meanwhile the stop block 321 at one side of the rack 32 moves up together with the stop block 39, separating from the two stoppers 41 of the fix units 4, as shown in FIG. 7. Then the lockset 3 is unlocked, permitting the railing body 2 to be opened by a user. After the railing body 2 is opened, the grip 33 is released manually, and the spring 38 recovers its resilience to shrink to its original position, with the connect tube 37 together with the rack 32 moving down and with the teeth 320 of the rack bringing the teeth 331 of the grip 33 down, and with the other end of the grip 33 rotating upward to its original position with the function of the sidewise shaft 301.

Next, when the railing body 2 is closed, as shown in FIG. 8, the stop blocks 321 and 39 of the side rod 24 of the railing body 2 compress the stoppers 41 of the fix unit 4, with the slanting surfaces 410 pushing the stoppers 41 towards the base 40 and with the stoppers 41 compressing the spring 38 to shrink until the stop blocks 321 and 39 come to contact with the two stoppers 41. Then the spring 38 may recover its resilience to push the two stoppers 41 outward, letting the two stop blocks 321 and 39 kept immovable between the two stoppers 41. Then the push button 34 on the grip 33 is shift outward, forcing the deadbolt 35 move outward and insert in the insert hole 23, as shown in FIG. 6, which shows the railing body 2 is locked by the lockset 3. In this way, the railing body 2 is locked completely, impossible to be opened unless the lockset is unlocked, keeping a baby or a pet from crawling out of the room limited by this railing.

While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention. 

1. A protective railing comprising: a frame provided with a pivotal base on an upper side, said pivotal base having a pivot, said frame also having a pivot fixed on a lower side rod corresponding to said pivot of the pivotal base; a railing body positioned in said frame, having a left side rod provided with a shaft hole in an upper end and a lower end and an opening formed at an upper section of a right side, a guide rod fixed in said opening and having an insert hole, a right side rod positioned at the right side and closing said opening, said right side rod being hollow and having a slot in its lower end section; a lockset fixed on said opening of said railing body; two fix units fixed on an upper end and a lower end of a vertical support rod positioned at an inner side of said frame; and, A plurality of position members fixed at four corners of said frame.
 2. The protective railing as claimed in claim 1, wherein said frame is U-shaped.
 3. The protective railing as claimed in claim 1, wherein said lockset consists of a left housing, a right housing, a rack, a grip, a push button, a deadbolt, a cover, a connect tube, a spring and a stop block; said left housing having a sidewise shaft on its inner surface, an elongate aperture in one vertical side; said right housing having an insert hole corresponding to said sidewise shaft of said left housing, and an elongate aperture formed in a vertical side, screws screwing tightly in said sidewise shaft of said left housing and in said insert hole of said right housing; said rack having plural teeth on one side surface and a stop block on the other side surface, said stop block extending in said elongate apertures of said left and said right housing; said grip having a first end positioned in said left and said right housing, said first end of said grip having a shaft hole for said sidewise shaft of said left housing to fit therein and plural teeth formed on an outer surface to engage with said teeth of said rack, said grip further having a slide slot in a center section and a second end formed with a groove to fit with said guide rod of said railing body, a hole formed in the wall defining said groove; said push button positioned in said slide slot of said grip; said deadbolt positioned in said grip and having a first end extending in said hole of said grip; said cover positioned under said grip and having two upright parallel plates limiting said deadbolt movable straight in a gap between said two upright plates, said cover further having a first end provided with a groove fitting with said guide rod of said railing body, a hole formed in the wall defining said groove for a second end of said deadbolt to fit through therein out; said connect tube connected to a lower end of said rack and extending in said side rod of said railing body; said spring positioned in a lower portion of said connect tube and having a first end fixed inside said connect tube and a second end hooking a lower edge of said side rod of said railing body so as to keep said connect tube elastically biased downward; and, said stop block fixed at a lower end of said connect tube and extending partly in said slot of said side rod of said railing body.
 4. The protective railing as claimed in claim 1, wherein said fix unit respectively consists of a base, two stoppers, two springs, and a fix base: said base having two parallel lengthwise holes and an opening in a rear portion to fit with a vertical rod of said frame; said two stoppers fitting in said two lengthwise holes of said base and respectively having a front end formed with a slanting surface and a post extending rearward; said two springs positioned behind said two stoppers and having a first end fitting around said post and a second end fitting around a post at a front end of said fix base; and, said fix base positioned behind said base and having an opening facing rearward and the two posts at the front end for the second end of said two springs to fit around.
 5. The protective railing as claimed in claim 1, wherein said position members respectively consist of a threaded rod, a nut and a position head. 